Radiological Procedures

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B J Mcparland - One of the best experts on this subject based on the ideXlab platform.

  • entrance skin dose estimates derived from dose area product measurements in interventional Radiological Procedures
    British Journal of Radiology, 1998
    Co-Authors: B J Mcparland
    Abstract:

    Patient skin doses resulting from interventional Radiological Procedures have the potential to exceed threshold doses for deterministic effects such as erythema and epilation. If the irradiation geometry is known, the entrance skin dose can be estimated from the measured dose-area product. For each of 10 non-coronary interventional Procedures, a nominal geometry was identified. From a previous survey of patient dose-area products, the entrance skin doses were estimated under the assumption that all Procedures were performed with the nominal geometry specific to it. An analysis of the uncertainties in these doses caused by realistic deviations from the nominal geometry was also performed and it was shown that the estimated entrance skin dose values are at least to within 40%, and generally to within about 30%, of those actually received. For example, the median estimated entrance skin doses for the posteroanterior and lateral projections of cerebral angiography were 100 and 110 mGy. respectively, and for hepatic angiography 425 mGy. The largest entrance skin dose estimate for a single projection was for the angiography component of a CT arterial portography procedure at 670 mGy. Comparisons between entrance skin dose estimates obtained from this study are made with data from other interventional radiology patient dose surveys.

  • A study of patient radiation doses in interventional Radiological Procedures.
    The British journal of radiology, 1998
    Co-Authors: B J Mcparland
    Abstract:

    Patient radiation doses received during interventional Radiological Procedures can be significant. To aid in the establishment of reference dose levels, a patient dose survey has been conducted of such Procedures. A total of 288 non-coronary Procedures (177 classified as diagnostic and 111 as therapeutic) were accrued into the study. For each procedure, the fluoroscopy screening time and the fluoroscopic and digital radiographic dose-area products were recorded in a computer database. For example, median dose-area product values (due to fluoroscopy and digital radiography combined) of 24.2, 27.9, 69.6 and 74.7 Gy cm2 were obtained for nephrostomy, biliary stent removal/insertion, cerebral angiography and percutaneous transhepatic cholangiography Procedures. While the effective dose is not an accurate measure of patient risk, it is convenient for comparing the Radiological risks associated with various Procedures. Effective doses were estimated from the total dose-area products. The respective median estim...

Karin Anna Herrmann - One of the best experts on this subject based on the ideXlab platform.

  • Interventional Radiological Procedures in impaired function of surgically implanted catheter-port systems
    CardioVascular and Interventional Radiology, 2001
    Co-Authors: Karin Anna Herrmann, Tobias Waggershauser, Volker Heinemann, Maximilian Reiser
    Abstract:

    Purpose: System-related complications in surgically implanted catheter-port systems (CPS) for intraarterial (i.a.) chemotherapy are well known. In most cases of complications, the treatment must be interrupted and the catheter-port system must be repaired surgically. We describe microinvasive interventional Radiological Procedures to correct some dysfunctions of CPS. Methods: Five patients with repetitive dysfunction of CPS were treated with interventional techniques. Two patients presented with perfusion impairment, one patient had a pseudoaneurysm of the hepatic artery, and two patients presented with catheter displacement. Radiological interventions included mechanical recanalization with a guidewire, vascular stenting, and correction of catheter dislocation with a gooseneck snare. Results: In all cases, correct function of the CPS was restored. No intervention-related complications occurred and surgery was avoided. Chemotherapy could be continued for a period of 4–10 months. Conclusion: For some system-related complications, minimally invasive Radiological interventions can be used to restore the function of CPS for i.a. chemotherapy.

  • Interventional Radiological Procedures in impaired function of surgically implanted catheter-port systems.
    Cardiovascular and interventional radiology, 2001
    Co-Authors: Karin Anna Herrmann, Tobias Waggershauser, Volker Heinemann, Maximilian F. Reiser
    Abstract:

    Purpose: System-related complications in surgically implanted catheter-port systems (CPS) for intraarterial (i.a.) chemotherapy are well known. In most cases of complications, the treatment must be interrupted and the catheter-port system must be repaired surgically. We describe microinvasive interventional Radiological Procedures to correct some dysfunctions of CPS.

Maximilian F. Reiser - One of the best experts on this subject based on the ideXlab platform.

Volker Heinemann - One of the best experts on this subject based on the ideXlab platform.

  • Interventional Radiological Procedures in impaired function of surgically implanted catheter-port systems
    CardioVascular and Interventional Radiology, 2001
    Co-Authors: Karin Anna Herrmann, Tobias Waggershauser, Volker Heinemann, Maximilian Reiser
    Abstract:

    Purpose: System-related complications in surgically implanted catheter-port systems (CPS) for intraarterial (i.a.) chemotherapy are well known. In most cases of complications, the treatment must be interrupted and the catheter-port system must be repaired surgically. We describe microinvasive interventional Radiological Procedures to correct some dysfunctions of CPS. Methods: Five patients with repetitive dysfunction of CPS were treated with interventional techniques. Two patients presented with perfusion impairment, one patient had a pseudoaneurysm of the hepatic artery, and two patients presented with catheter displacement. Radiological interventions included mechanical recanalization with a guidewire, vascular stenting, and correction of catheter dislocation with a gooseneck snare. Results: In all cases, correct function of the CPS was restored. No intervention-related complications occurred and surgery was avoided. Chemotherapy could be continued for a period of 4–10 months. Conclusion: For some system-related complications, minimally invasive Radiological interventions can be used to restore the function of CPS for i.a. chemotherapy.

  • Interventional Radiological Procedures in impaired function of surgically implanted catheter-port systems.
    Cardiovascular and interventional radiology, 2001
    Co-Authors: Karin Anna Herrmann, Tobias Waggershauser, Volker Heinemann, Maximilian F. Reiser
    Abstract:

    Purpose: System-related complications in surgically implanted catheter-port systems (CPS) for intraarterial (i.a.) chemotherapy are well known. In most cases of complications, the treatment must be interrupted and the catheter-port system must be repaired surgically. We describe microinvasive interventional Radiological Procedures to correct some dysfunctions of CPS.

Tobias Waggershauser - One of the best experts on this subject based on the ideXlab platform.

  • Interventional Radiological Procedures in impaired function of surgically implanted catheter-port systems
    CardioVascular and Interventional Radiology, 2001
    Co-Authors: Karin Anna Herrmann, Tobias Waggershauser, Volker Heinemann, Maximilian Reiser
    Abstract:

    Purpose: System-related complications in surgically implanted catheter-port systems (CPS) for intraarterial (i.a.) chemotherapy are well known. In most cases of complications, the treatment must be interrupted and the catheter-port system must be repaired surgically. We describe microinvasive interventional Radiological Procedures to correct some dysfunctions of CPS. Methods: Five patients with repetitive dysfunction of CPS were treated with interventional techniques. Two patients presented with perfusion impairment, one patient had a pseudoaneurysm of the hepatic artery, and two patients presented with catheter displacement. Radiological interventions included mechanical recanalization with a guidewire, vascular stenting, and correction of catheter dislocation with a gooseneck snare. Results: In all cases, correct function of the CPS was restored. No intervention-related complications occurred and surgery was avoided. Chemotherapy could be continued for a period of 4–10 months. Conclusion: For some system-related complications, minimally invasive Radiological interventions can be used to restore the function of CPS for i.a. chemotherapy.

  • Interventional Radiological Procedures in impaired function of surgically implanted catheter-port systems.
    Cardiovascular and interventional radiology, 2001
    Co-Authors: Karin Anna Herrmann, Tobias Waggershauser, Volker Heinemann, Maximilian F. Reiser
    Abstract:

    Purpose: System-related complications in surgically implanted catheter-port systems (CPS) for intraarterial (i.a.) chemotherapy are well known. In most cases of complications, the treatment must be interrupted and the catheter-port system must be repaired surgically. We describe microinvasive interventional Radiological Procedures to correct some dysfunctions of CPS.